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This Convenient needles is that the needle pinhole for rubber material, through the rubber and metal bonding, at the time of use, users only need to gently press the rubber part of the central, you can make it form into an 'o' form of pinhole, easy amplification pinhole, convenient users can more easily see the pinhole, quicker needle.
Needles in using the crowd are diverse, including older users. Relative to the old man, the pinhole for rubber needles of soft tactility more business-friendly break needle sharp image of chill. And when use only need to gently press the pinhole to enlarge, more convenient and the use of older users.